Oil-stove.



R. HOFFMAN.

OIL STOVE.

APPLICATION FILED NOV. 13, 1915.

1 ,1- 98,443. Patented Sept. 19, 1916.

n srarns ATENT orruon.

RUDOLPH HOFFMAN, OF KANKAKEE, ILLINOIS, ASSIGNOR T0 SEARS, ROEBUCK AND COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK.

OIL-STOVE.

Specification of Letters Patent.

Patented Sept. 19, 1916.

Application filed November 13, 1915. Serial No. 61,388.

the level of the oil in the oil-holders of the burners should be in a certain plane. Oilsupplying means, according to my invention, comprises a stationary well which feeds the supply pipe for the burners and a removable reservoir proper which may be in the form of a glass bottle, and which is supported in inverted position with the neck of the bottle projecting down into said well. In manufacturing these bottles, variations in dimen- I sions of the neck and adjacent portions will occur, and unless means be provided to prevent, such variations, when the bottles are associated with their oil wells, will cause a variation in the plane of the oil level maintained in said wells and the oil-holders of the burners.

It is one of the objects of the present invention to provide means for supporting the reservoir on the oil well in such a manner that variations in the reservoir will not affoot the operative relation of the reservoir to the oil well and therefore an invariable oil level will be insured. This object is accomplished by providing a supporting device which is attached to the neck of the bottle so as to support the bottle with the lower end of the neck in an invariable relation to the oil well.

Another object is to provide improved means for securing the reservoir in place.

A further object is to provide means to prevent the oil from creeping up over the edge of the oil well.

In the accompanying drawings, Figure 1 is a view partially in front elevation and partially in vertical section illustrating an oil stove embodying the features of my invention. Fig. 2 is a plan sectional view taken in the plane of line 22 of Fig. 1. Fig. 3 is an enlarged vertical section through the oil well, reservoir, and supporting means. Fig. 4 is a detail perspective view of one of the levers for holding the reservoir in place.

In the drawings, 5 indicates a fragment of an oil stove body and 6 designates the annular oil holder or bowl of a wickless burner. A pipe 7 leads from the bottom of the oil well 8 and supplies oil to one or more burners 6. The oil well 8 may be supported in any suitable manner, being here shown as carried by a horizontal plate 9 and depending from the edges surrounding a hole in the plate, the latter being supported on one end of the stove body 5 in any desired manner.

The oil reservoir 10, in the form herein shown, is a large glass bottle of oval shape in end view (Fig. 1) and elongated or rectangular shape in plan view, as shown by dotted lines in Fig. 2. The shape of the reservoir, however, is not essential to my invention. The lower end of the neck 11 of the bottle has exterior screw threads formed thereon to receive a device which acts as a closure as well as a support for the bottle. This device comprises a clo sure or cap 13 having a threaded flange to be turned onto the neck 11 and a bottle supporting portion 14: secured to said closure and being of generally conveXo-concave form with a peripheral horizontal flange 15 adapted to overlie and be supported by the plate 9 at the upper edge of the wall of the oil well 8. The closure 13 and support 14: are rigidly secured together as by soldering, so that the reservoir will be firmly supported on the oil well. If desired, air inlet openings 14 may be formed in the plate 1 1 to admit air to the well.

A pair of locking levers 16 each pivoted at 17 on the plate 9 are arranged to overlie the flange 15 to lock said flange to the plate 9. In the present instance the levers 16 are provided with offset arcuate portions 18 which overlie the flange 15, the body of the levers being in approximately the same hori zontal plane as said flange. Preferably the ends 19 of the levers are bent back to engage beneath the edge of the plate 9 and prevent upward movement of the levers. The stability of the reservoir is further assured by a plate 12 which projects out from the end wall of the stove and bears against the res ervoir. The plate 12 keeps the reservoir from turning in a horizontal plane.

The closure 13 is provided with a valve structure to prevent escape of oil from the reservoir except when the latter is in operative position on the oil well. This valve structure in the preferred form comprises a guide 20 secured to the inner side of the closure, a stem 21 slidable in said guide and having a valve member 22 fixed thereto, and a coiled spring- 23 tending to hold said valve member against the valve seat 25% on the closure to close the discharge opening 25. The stem 21 projects out through the discharge opening 25 so that in the act of associating the reservoir with the oil well the stem will come in contract with the bottom of said well and open the valve, as clearly shown in Fig. 3.

The oil in the well 8 has a tendency to creep up in a thin film along the walls of the well and thence along the plate 9. In order to prevent this a guard 26 is provided. This guard in the present instance is secured at the upper edge of the oil well and extends inwardly and downwardly therefrom, being of co'nvexo-concave form substantially similar to the reservoir supporting element- 14. The latter fits within the guard 26 and may be partially supported thereby; In the present instance the support 1 1 has a central bulging portion 14 which fits more or less snugly within the central opening in the guard 26 and assists to hold the reservoir in proper position with relation to the oil well.

Assuming the oil well 8 to be empty, when the reservoir is placed thereon oil will flow from the reservoir into the oil well and thence into the pipe 7 and burner 6 until the level of the oil in the burner and the well rises to a plane coincident with or near the plane of the lower end of the neck 11. Atmospheric pressure will prevent further escape of oil from the reservoir, except as it is used up at the burner. Inasmuch as the cap 13, is mounted on the end of the neck of the reservoir and the flange 15 rests on a part which bears a fixed relation to the bottom of the oil well, any reservoir can be placed on any oil well in assembling the stoves, and an invariable distance between the end of the neck 11 and the bottom of the well and therefore an invariable oil level in the well will be insured.

In use, when the reservoir 10 gets nearly empty the operator swings the levers 16 away from each other, raises and inverts the reservoir, unscrews the cap 13, pours a quantity of oil into the reservoir, replaces the cap, reassociates the reservoir with the well 8, and swings the levers 16 toward each other to overlie the flange 15. The oil does not escape from the reservoir until the pin 21 strikes the bottom of the well 8 to raise the valve 22.

The foregoing description of specific details of my improvement has been given for the sake of clearness and not with. any intention of limiting the invention to the construction disclosed.

The scope of the invention is pointed out in the appended claims.

I claim as my invention:

1. An oil stove having, in combination, a tank having a body and a neck made of glass, a cap connected to the end of said neck, an oil well, means for supporting the oil well, an inwardly and downwardly extending guard secured to the upper portion of the well and having a central opening, and a supporting flange secured. to the cap and supported by said guard.

2. An oil stove having, in combination, a tank having a body and a neck made of glass, a cap connected to the end of said neck, an oil well, means for supporting; the oil well, an inwardly and downwardly extending guard secured to the upper portion of the well and having a central opening, and a flange secured to the cap and having a peripheral supporting portion that overlies the upper edge of the oil well.

3. An oil stove having, in combination, an oil well, an oil reservoir made of glass and having a neck projecting down into said well, a cap secured to the neck and a supporting member attached. to the cap and having its perimeter supported at the upper edges of said well.

4. An oil stove having, in combination, an oil well, an oil reservoir made of glass and having a neck projecting downwardly, a valved closure screwed onto said neck, and a support secured to said closure and surrounding said neck and having its perimetrical portion supported adjacent to the upper edge of said oil well.

5. An oil stove having, in combination, a tank having a body and a neck made of glass, a cap connected to the end of said neck, an oil well, means for supporting the oil well, an inwardly and downwardly ex tending guard secured to the upper portion of the well and having a central opening, and a flange secured to the cap and supported by said well.

6. An oil-stove having, in combination, a tank having a body and a neck made of glass, a cap detachably connected to the end of said neck, an oil well, means for supporting the oil well, an inwardly and downwardly extending guard secured tothe upper portion of the well and having a central opening, and a supporting flange secured to the cap and supported by said guard, said flange having a central portion lying within said opening and assisting to position the tank.

7. An oil stove having, in combination, a support, an oil well secured to said support, a tank having a body and a neck, a

cap connected to the end of said neck, a supporting member connected to said cap and adapted to rest upon said support with said cap located in the oil well, and two levers pivoted to said support for movement toward and away from each other and adapted to engage opposite sides of said supporting member to lock the tank in place.

8. An oil stove having, in combination, an oil reservoir made of glass and having a neck, a valved closure threaded onto said neck, and a conveXo-concave supporting member secured to said closure and extending outwardly therefrom and having a peripheral supporting flange.

9. An oil stove having, in combination, a framework including a support, an oil Well secured to said support, a tank having a body and a neck, a cap connected to the end of said neck, a supporting member connected to said cap and adapted to rest upon said support with said cap located in the oil well, means adapted to engage said supporting member to lock the tank in place on the support, and a. positioning member projecting from the framework in position to engage the body of the tank.

10. An oil stove having, in combination, a stove frame, a horizontal plate having an opening therein, an oil well depending from and secured to said plate around said opening, an oil reservoir having a neck projecting down into said oil well, a valved closure threaded onto said neck, and a supporting member secured to said closure and extending outwardly therefrom and provided with a peripheral flange which is adapted to be supported at the upper edge of said oil well.

11. An oil stove having, in combination, a framework including a support, an oil well secured to said support, a tank having a horizontally elongated body and a neck, means for connecting the neck to the support with the tank inverted over the oil well, and means connected to the framework to keep the tank from turning in a horizontal plane.

12. An oil stove having, in combination, a stove frame, a horizontal plate carried thereby, an oil well carried by and depending from said plate, an oil reservoir having a neck extending down into said well, acap secured; to. said neck, a supporting member connected to the cap and adapted to bear at its periphery upon the upper part of said well, and a pair of levers pivoted to said plate and adapted to overlie the edge of said supporting member .for securing the latter and the reservoir in place.

13. An oil stove having, in combination, a framework including a support, an oil well secured to said support, a tank having a body and a neck, means for attaching the neck of the tank to said support, and a positioning member projecting from the framework in position to engage the body of the tank.

14. An oil stove having, in combination, a horizontal plate, an oil well carried by and depending from said plate, an oil reservoir having a depending neck, a support secured to said neck and having a peripheral flange to rest upon the upper edge of said well, and a pair of levers pivoted to said plate and adapted to overlie opposite edges of said flange, the free ends of said levers having means engaging beneath the edge of said plate to prevent upward movement of the levers.

15. An oil stove having, in combination, a horizontal support, a pair of levers pivoted thereon and secured against upward displacement, an oil well beneath said support, an oil reservoir, a cap secured to the reservoir about its outlet, and a supporting mem ber secured to the cap and adapted to sup port the reservoir by engagement with said oil well, said levers being adapted to engage said supporting member to secure the latter in place.

16. An oil tank having a body and a neck made of glass, a cap having a screw-thread connection with the end of said neck, a valve structure carried by said cap, and a tanksupporting member secured to said cap and removable from the tank with the cap.

17. An oil stove having, in combination, an oil well, an inwardly and downwardly extending annular member secured to the upright walls of said well to prevent creeping of the oil, an oil reservoir having a depending neck, a cap mounted on said neck and adapted to fit within said member, and a reservoir-supporting member secured to the cap and overlying said annular member and resting upon the oil well.

In testimony whereof, I hereunto set my hand in the presence of two witnesses.

RUDOLPH HOFFMAN.

In the presence of LULU Bnnon, Gno. H. EHRIOH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

